809289048798 has 32 divisors (see below), whose sum is σ = 1801614528000. Its totient is φ = 269283853368.

The previous prime is 809289048773. The next prime is 809289048817. The reversal of 809289048798 is 897840982908.

It is a Smith number, since the sum of its digits (72) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13279398 + ... + 13340201.

It is an arithmetic number, because the mean of its divisors is an integer number (56300454000).

Almost surely, 2^809289048798 is an apocalyptic number.

809289048798 is an abundant number, since it is smaller than the sum of its proper divisors (992325479202).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

809289048798 is a wasteful number, since it uses less digits than its factorization.

809289048798 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26620173 (or 26620167 counting only the distinct ones).

The product of its (nonzero) digits is 167215104, while the sum is 72.

The spelling of 809289048798 in words is "eight hundred nine billion, two hundred eighty-nine million, forty-eight thousand, seven hundred ninety-eight".